Torque.init()について

package login;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.*;
import org.apache.torque.Torque;

public class InitLoginAction extends Action {
    public ActionForward execute(
        ActionMapping mapping,
        ActionForm form,
        HttpServletRequest request,
        HttpServletResponse response)
        throws Exception {
        request.getSession().invalidate();
        Torque.init("Torque.properties");
        return mapping.findForward("success");
    }
}